Method for Blending of Concentrations for Dilution on the Fly - A process for concentrating and diluting a treatment substance to provide a diluted treatment for introduction to a wellbore is disclosed. In one embodiment, the process includes measuring a treatment fluid flow rate. The process also includes blending the treatment fluid with a treatment substance to produce a concentrated treatment fluid. The process further includes measuring a flow rate of the concentrated treatment fluid. Moreover, the process includes determining a difference between the treatment fluid flow rate and the flow rate of the concentrated treatment fluid. In addition, the process includes comparing the difference to a target difference. The process additionally includes adjusting the difference to be within a desired range of the target difference and diluting the concentrated treatment fluid to provide the diluted treatment fluid.

2010-02-25

20100046317

WORM EXTRUDER COMPRISING A COOLING DEVICE IN THE FEED ZONE - A worm extruder and/or an extruder for processing plastic materials and mixtures of plastic materials includes a worm cylinder and a worm shaft which is drivable for rotation therein, wherein an end region of the worm cylinder comprises an inlet opening for feeding plastic material or mixtures of several plastic materials and/or additives in the form of a bulk material via a feed throat. At least one cooling device is provided in a section of the worm cylinder adjoining the inlet opening. An active heat barrier is provided in the region of the feed throat and includes electrically controllable means for heat dissipation. This increases the efficiency of the cooling process, reduces the operating costs and increases the operational reliability of the worm extruder.

2010-02-25

20100046318

SYSTEM AND METHOD FOR DOUGH EXTRUSION - A system and method for extrusion of dough is disclosed. The system includes an auger for moving the dough; a metering pump comprising an input; a first motor for actuating the auger to transfer dough to the input of the metering pump; a first encoder for reading a position or speed of the first motor and for transmitting a signal associated with the position or speed of the first motor; and a controller configured to receive the signal from the first encoder to control operation of the first motor. The controller operates the first motor to at least partially counteract a variance in a pressure of dough at the metering pump based signals from the encoder and/or the pressure sensor.

Control System For and Method of Combining Materials - An apparatus and method for combining multiple materials. The multiple materials may include both a major material and one or more minor materials. The major and minor materials are added at transient or steady state flow rates, depending upon a command from a control signal. The actual flow rates track the commanded flow rates, but deviate by an error. The claimed arrangement provides an instantaneous and time-based error believed to be unobtainable in the prior art.

2010-02-25

20100046322

METHOD AND APPARATUS FOR FORMING AN HOMOGENEOUS MIXTURE OF CHROMATOGRAPHY MEDIA IN A VESSEL - The present invention relates to methods and apparatus for forming an homogeneous mixture of chromatography media in a vessel. The invention also relates to methods and apparatus for transferring the homogeneous media from the vessel into a second vessel in preparation for packing a chromatography column. The invention can also be used directly to pack the column with homogeneous media.

2010-02-25

20100046323

Magnetic Stirring Devices and Methods - Magnetic stirring devices, such as magnetic stirring elements and magnetic stirring systems, and stirring methods where enhanced stability and mixing efficiency is made possible by using magnets that are magnetized through thickness in relation to the rotation axis so as to improve torque and magnetic field coverage. In addition, stirring elements having protruding structures such as blades and support legs are used to improve stirring efficiency.

2010-02-25

20100046324

Complex Analysis of Kinematics for Non-Hyperbolic Moveout Corrections - A computer-implemented method for processing data includes receiving a collection of traces corresponding to signals received over time at multiple locations due to reflection of seismic waves from subsurface structures. A measure of correlation among the traces as is computed a function of a set of wavefront parameters, which determine respective moveout corrections to be applied in aligning the traces. A matrix having at least three dimensions is generated, wherein the elements of the matrix include the computed measure of the correlation. Using the matrix, values of the wavefront parameters are identified automatically or interactively along the time axis or along selected horizons to maximize the measure of the correlation, and a seismic image of the subsurface structures is generated by aligning and integrating the traces using the moveout corrections that are determined by the identified values of the wavefront parameters.

Method and apparatus for detection and classification of a swimming object - A method and apparatus for detecting and classifying submerged swimming object from a passive signal generated by, and an active signal reflected from the object. In a first input of a passive mode branch a first signal representative of the passive signal is received. A second signal representative of the active signal is received in a second input of an active mode branch. In the active mode branch, the first signal is processed to generate a first classification estimate output, with first clues, of the most probable class of target for the object. In the passive mode branch, the second signal is processed to generate a second classification estimate output, with first clues, of the most probable class of target for the object. Both estimate outputs are received in a merger, for generating a merged classification estimate output with clues, which is input to a joint classifier that classifies the object.

2010-02-25

20100046327

Methods and Systems to Detect Changes in Multiple-Frequency Band Sonar Data - Methods and systems to detect changes in a region of space relative to baseline measurements, including to process data to detect potential objects, or contacts against a natural background environment, to characterize and geo-register the contacts, to compare and correlate the contacts with a database of known objects, and to report uncorrelated contacts as new objects in the space. Features disclosed herein may be implemented to process image data from a line-by-line image-generation system including, for example, side-looking sonar. Methods and system may be implemented with respect to multi-frequency band sonar data.

2010-02-25

20100046328

Wearable Electronic Device with Secondary Digital Display - A wearable electronic device of the type wherein information is conveyed in an analog manner at least in part by the use of at least one display hand, wherein the wearable electronic device includes a dial having a dial side and an opposite side, wherein the display hand is positioned on the dial side of the dial, wherein the wearable electronic device comprises among other things, a casing having a frontside and a backside, wherein the dial is viewable from the frontside thereof; and a digital display, operatively coupled to a controller assembly, wherein the digital display displays at least mode specific informational indicia and is viewable only from the backside of the device; at least one actuator, operatively coupled to the controller assembly, for changing the mode specific informational indicia displayed on the digital display; and wherein the controller assembly causes the mode specific informational indicia displayed on the digital display to be thereafter reflected in the information displayed in the analog manner by the at least one display hand.

PLANER PLASMON ANTENNA, THERMALLY ASSISTED MAGNETIC HEAD AND HARD DISK DRIVE - A planar plasmon antenna is formed on a YZ plane including a Z-axis, the Z-axis being a propagation direction of excitation light for near-field light generation. The longitudinal direction of the planar plasmon antenna is oblique relative to the Y-axis, and the angle of a corner of the planar plasmon antenna in the YZ plane is an acute angle. The corner, which forms an acute angle, generates intense near-field light in response to excitation light irradiation.

2010-02-25

20100046332

SIGNAL PROCESSING DEVICE FOR OPTICAL DISKS AND OPTICAL DISK APPARATUS - A signal processing device for optical disks includes a reflected light process section configured to convert reflected light received by an optical pickup into an electric signal based on a first gain, wherein the optical pickup emits laser light to an optical disk and receives reflected light from the optical disk; a servo signal generation section configured to generate a servo signal by using the electric signal generated by the reflected light process section; a servo signal control section configured to control the servo signal so that a change in the amplitude of the servo signal, in response to an increase or decrease of the amount of the reflected light from the optical disk, is suppressed using an attenuator that attenuates the servo signal generated by the servo signal generation section by a factor of a second gain; and a gain setting section configured to set the first gain to the reflected light process section and the second gain to the servo signal control section substantially simultaneously.

RECORDING METHOD, RECORDING MEDIUM AND STORAGE DEVICE - A recording method includes multiplexing data and continuously recording multiplexed data in a continuous recording region of a recording medium having a random recording region, and recording management information about multiplexing and recording in the random recording region.

2010-02-25

20100046335

METHOD OF MANAGING OVERWRITE AND METHOD OF RECORDING MANAGEMENT INFORMATION ON AN OPTICAL DISC WRITE ONCE - A device and method of reproducing and/or recording data onto a write once recording medium, the recording medium having a data area and a management area, the data area having a spare area. The recording method include: performing a replacement-recording by recording data requested to be recorded in a specified area onto a replacement area in the data area when the specified area is defective or contains data recorded thereon; and recording onto the management area a pair of consecutive entries for managing the replacement-recording when a size of the specified area corresponds to a plurality of consecutive recording-units. One of the pair of consecutive entries includes start address information of the specified area and start address information of the replacement area and another of the pair of consecutive entries includes end address information of the specified area and end address information of the replacement area.

2010-02-25

20100046336

INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCTION APPARATUS, RECORDING METHOD AND REPRODUCTION METHOD - An information recording medium is provided that includes a data area for recording user data and a defect management area for recording a defect list for managing N number of defect areas existing in the data area, where N is an integer satisfying N≧0. The defect list includes two or more blocks, and further includes a header located at a fixed position in the defect list and N number of defect entries, located subsequent to the header, including position information on the respective positions of the N number of defect areas. An anchor is located subsequent to the defect entries, and the header includes first update times information representing the number of times that the defect list has been updated. The anchor includes second update times information representing the number of times that the defect list has been updated.

OPTICAL DISC RECORDING/REPRODUCTION APPARATUS - The present invention solves the problems that, in a detection circuit which is mostly configured by analog circuits, the chip size cannot be reduced even using a highly-precise processing, there are many external capacitors and terminals thereof, a plurality of high-speed and large-scale AD converters are required for digitization, the detection precision of a small amplitude signal superimposed on an RF signal is deteriorated, and high-speed sample/hold is required.

2010-02-25

20100046340

OPTICAL DRIVE DEVICE AND AMPLIFICATION RATE DETERMINING METHOD - An optical drive device generates a fist push-pull signal and a first sum signal based on a light receiving amount in two light receiving areas of which each width in a signal light tangent direction is smaller than a diameter of a spot of signal light, generates a first normalized push-pull signal by normalizing the first push-pull signal by using the first suits signal, and generates a tracking error signal based on the first normalized push-pull signal.

2010-02-25

20100046341

ADDITIONALLY RECORDABLE INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD, INFORMATION REPRODUCING METHOD, INFORMATION RECORDING APPARATUS AND INFORMATION REPRODUCING APPARATUS - An additionally recordable information recording medium has a complicated management structure for managing an unrecorded area. Therefore, there are problems that it takes a long time for a disk to startup and it is difficult to build a recording/reproducing system. The additionally recordable information recording medium according to the present invention includes a simple data structure for managing a location information for a recorded area located at the rearmost location in a user data area. An additionally recordable apparatus according to the present invention also includes means for updating the location information of the recorded area so that the recorded area located at the rearmost location in the user data area is always managed.

2010-02-25

20100046342

RECORDING AND REPLAYING DEVICE - A recording and replaying device is provided in which a user can easily diagnose failure when a built-in storage device of the device fails. In a normal operation state, a microcomputer controls a signal path switching mechanism to connect a signal processing device and a hard disk drive (HDD). In an abnormal operation state, the microcomputer sets a USB interface device to effective state, and controls the signal path switching mechanism to connect the USB interface device and the hard disk drive (HDD), so that the hard disk drive is recognized by an external personal computer as a USB mass storage.

2010-02-25

20100046343

FOLDABLE PORTABLE ELECTRONIC DEVICE AND SYSTEM AND METHOD FOR PROTECTING HARD DISK - A foldable portable electronic device, a system and a method for protecting a built-in hard disk thereof are disclosed. The foldable portable electronic device includes a display and a main body. The system includes a trigger, a lid switch, and a logic judgment module. When the foldable portable electronic device is away form a flat surface, the trigger generates a first signal; when the display is folded onto the main body, the lid switch generates a second signal. The logic judgment module determines the method to control and protect the hard disk in accordance with the first signal and the second signal.

2010-02-25

20100046344

OPTICAL RECORDING MEDIUM AND METHOD OF RECORDING VISIBLE INFORMATION - The present invention relates to an optical recording medium comprising a visible information recording layer on a support. The visible information recording layer comprises a given dye. The optical recording medium may further comprise a recording layer capable of recording and/or reproducing information by irradiation of a laser beam. The visible information is recorded by using the same laser bean as that used in recording information on the recording layer.

OPTICAL SCANNING DEVICE - An optical scanning device for scanning optical record carriers, the optical record carriers including a first optical record carrier, a second optical record carrier and a third optical record carrier, the scanning device including a radiation source system (

FABRICATION METHOD OF MULTILAYER OPTICAL RECORD MEDIUM AND RECORDING APPARATUS FOR MULTILAYERED OPTICAL RECORD MEDIUM - A fabrication method of a multilayer optical recording medium having a plurality of recording layers, comprises a step of preparing an optical recording medium having at least one record area; a write-position mark generating step of recording write-position marks in the record area beforehand; a step of preparing an optical system including a common objective lens to focus a data recording beam and a position mark recording beam on different positions in a thickness direction of the record area; a first data writing step of writing data between the write-position marks with following the write-position marks by the data recording beam; a position mark recording step of, in parallel with the first data writing step, recording new write-position marks in the record area by the position mark recording beam; and a second data writing step of writing data between the new write-position marks with following the new write-position marks by the data recording beam.

Method of manufacturing a limited use data storing device - Embodiments of methods and systems for controlling access to information stored on memory or data storage devices are disclosed. In various embodiments, methods of retrieving information from a data storage device previously deactivated by modification or degradation of at least a portion of the data storage device are disclosed.

2010-02-25

20100046353

OPTICAL RECORDING MEDIUM, OPTICAL HEAD DEVICE AND OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE - Light output from a laser is split into a first beam which is reflected light and a second beam which is transmitted light, by a polarization beam splitter. The polarization directions of the first beam and the second beam are orthogonal to each other. A disk includes a recording layer, a quarter wavelength plate layer, and a reflective layer. When information is recorded on the disk, the first beam, which travels inside the recording layer to the side of the reflective layer, and the second beam, which passes through the recording layer and is reflected at the reflective layer and travels inside the recording layer to the side opposite to the reflective layer, are focused on the same position. When information is reproduced from the disk, the second beam is blocked by a shutter, and the first beam reflected at the recording layer is received by a photodetector.

2010-02-25

20100046354

Optical disk - The invention provides an optical disk that enables high-speed reproduction of address signals. A wobble address system for optical disk supports various types of synchronization, such as phase synchronization, bit synchronization, word synchronization, etc., to be established easily with high detection reliability with the use of an self-orthogonal code. Thus, the invention provides a method for easily synchronizing an address signal, i.e., high-speed reproduction of the address signal. Further, by virtue of an efficient modulation system of the address signal and redundancy thereof, it becomes possible to detect address information with high reliability. This capability is particularly effective in optical recording/reproduction with a blue light source whose signal light quantity and reproduction quality are prone to reduce. Moreover, other additional data of the address data is preserved in the wobbles, which provides medium information to a rewritable optical disk without using embossed pits such that a high-reliability disk (with enhanced security) is realized with a low cost and easily.

2010-02-25

20100046355

Communication system for improved cross talk estimation and method thereof - The present invention relates to a communication system for improved crosstalk estimation and method thereof. The communication system may include a vectoring group and a central office. The vectoring group includes a plurality of first communication lines and at least one second communication line. The plurality of first communication lines is a different type of communication line from the at least one second communication line. The central office is configured to assign the pilot sequences to each communication line within the plurality of first communication lines according to a first constraint. The central office is also configured to delay sending a sync flag in response to a request until a flag sequence of the at least one second communication line satisfies a second constraint. The assigned pilot sequences and sent flag sequences are orthogonal to each other based on the first and second constraints.

2010-02-25

20100046356

METHOD FOR MULTIPLEXING CONTROL SIGNALS IN A MOBILE COMMUNICATION SYSTEM - Disclosed is a method for multiplexing control signals between a plurality of users when control signals for the plurality of users are allocated within one resource block. That is, a method for multiplexing control signals includes coding control signals for at least one user signals to correspond to a structure of a transmission block for the control signals among one or more dedicated resource block, multiplexing the control signals for the at least one user signals in the dedicated resource block, and transmitting the control signals, wherein the dedicated resource block is allocated for transmitting the control signals separately from data signals among a plurality of transmission resource blocks. A frequency division multiplexing (FDM) mode and a code division multiplexing (CDM) mode are used to multiplex the control signals for the plurality of users.

2010-02-25

20100046357

USING CDMA TO SEND UPLINK SIGNALS IN WLANs - Methods and apparatus for using code-division multiple access (CDMA) via orthogonal frequency-division multiplexing (OFDM) to convey information from user terminals to an access point (AP) in a wireless local area network (WLAN), for example, are provided. Employed in an effort to support a large number of user terminals while avoiding collisions, this CDMA-based scheme may offer a number of advantages when compared to conventional techniques for transmitting UL signals from a large number of user terminals. First, efficiency with respect to the number of slots used may be increased. In addition, this scheme may be scalable to a high number of user terminals and may have a soft limit as to the number of users that can be supported. Furthermore, this CDMA-based scheme may offer greater tolerance to frequency offsets and may be utilized for ranging and power control.

2010-02-25

20100046358

TRAINING SEQUENCES FOR VERY HIGH THROUGHPUT WIRELESS COMMUNICATION - Methods and systems for communications that generate a plurality of spatial streams, wherein each of the spatial streams comprises a data packet with a training sequence; and multiply at least a portion of the training sequence in each of the spatial streams with a different spreading sequence. Methods and systems that receive a plurality of spatial streams, wherein each of the spatial streams comprises a data packet with a training sequence; multiply at least a portion of the training sequence in each of the spatial streams with a different spreading sequence; and decode the plurality of spatial streams based on the different spreading sequences.

2010-02-25

20100046359

Wireless Terminal, Base Station and Channel Characteristic Estimating Method - In a wireless communication system based on an OFDM access system, when forgetting averaging channel estimation is performed, there occurs a phase difference between a present channel estimated value and a past estimated value due to a change of FFT operation timing at a reception side. The error of the channel estimated value caused by the phase difference is corrected. A synchronization catching/tracking unit to determine an operation timing of an FFT from a received signal is provided, and an FFT operation timing difference acquisition section to grasp a change of the operation timing of the FFT generated by the synchronization catching/tracking unit is provided. Based on an FFT operation timing change amount as an output of the FFT operation timing difference acquisition section, a rotation operation is performed on a propagation path estimated result stored in a channel estimation section to estimate a propagation path from a received pilot signal, so that the error of the channel estimated value is corrected.

2010-02-25

20100046360

WIRELESS COMMUNICATION METHOD, RECEIVING METHOD, AND WIRELESS COMMUNICATION DEVICE - A wireless communication method, comprising: allocating, by a base station device, elements of a sequence having an index indicative of a communication parameter to synchronization channel symbols; generating, by the base station device, a synchronization channel while maintaining symmetry of the sequence; transmitting, by the base station device, signals including the synchronization channel; receiving the signals by a mobile station device, correcting, by the mobile station device, the signals based on the symmetry of the sequence; and extracting, by the mobile station device, the communication parameter.

2010-02-25

20100046361

DEVICE AND METHOD FOR TRANSMITTING AND RECEIVING PILOT SIGNAL IN WIRELESS COMMUNICATION SYSTEM - Disclosed is a pilot signal transmitting/receiving device and method in a wireless communication system. When generating a pilot signal block that is shorter than the length of a data signal, a frequency for each predetermined pilot signal block is transitioned so as to guarantee frequency domain channel estimation performance. A cyclic prefix according to the length of the transitioned pilot signal is added to the pilot signal, a data signal is time division multiplexed together with the pilot signal, and a resultant signal is transmitted through an antenna. In advance to this, a position of a subcarrier for transmitting the pilot signal and the data signal is determined, a data signal is mapped on the determined subcarrier, and in this instance, diversity on the channel for a symbol is used to map the data signal on the transmission method using one of the localized FDMA (L-FDMA) channel and the distributed FDMA (D-FDMA) channel. Therefore, the frequency resolution in the frequency domain is maintained to thus provide high-quality channel estimation performance.

METHODS FOR MANAGING AN ELECTION OF A CLUSTER HEAD IN AD HOC MOBILE COMMUNICATION NETWORK AND SYSTEMS THEREOF - A method, computer readable medium, and system for managing a mobile communication network includes identifying one or more mobile communication devices within a region. One of the one or more identified mobile communication devices which have been dynamically formed into one or more clusters having a tree structure and are at least partially meshed together is elected as a cluster head in each of one or more clusters based on one or more parameters.

2010-02-25

20100046364

Transmitting system, apparatus, and method - A system includes a first apparatus and a second apparatus connected via a transmission path. The first apparatus includes a transmitting unit that transmits a request as at least one packet and retransmits the at least one request packet if a time period between the request and a response is not less than a predetermined time period; and a receiving unit that receives the response as at least one response packet and discards any error packet and any redundant packet from among the received at least one response packet. The second apparatus includes: a receiving unit that receives the at least one request packet and discards any error packet from among the received at least one request packet; and a transmitting unit that determines a response type, selectively makes the at least one response packet redundant for any response of a specific type, and transmits the redundant response packets.

2010-02-25

20100046365

MULTIPLE-PROTECTION SYSTEM AND CONTROL METHOD IN A COMMUNICATION DEVICE - A multiple-protection system in a communication device, includes: a plurality of working units; at least one protection unit; and a unit controller controlling unit switching from a failed working unit to a protection unit, wherein each of the plurality of working units and the protection unit comprises: a plurality of working circuit modules; at least one protection circuit module; and a module controller controlling module switching from a failed working circuit module to a protection circuit module, wherein, when module protection cannot be made by the module switching, the unit switching is performed.

2010-02-25

20100046366

METHODS AND SYSTEMS FOR PROVIDING A FAILOVER CIRCUIT FOR REROUTING LOGICAL CIRCUIT DATA - Methods and systems are provided to provide a failover circuit for rerouting logical circuit data. In accordance with an example method, an alternate communication path to route data for a logical circuit is identified. The logical circuit includes a communication path through first and second local access and transport areas and an inter-exchange carrier between the first and second local access and transport areas. A currently unused logical circuit is selected to communicate the data over the alternate communication path. The currently unused logical circuit traverses a failover network to reroute the data around the inter-exchange carrier. The currently unused logical circuit is designated as a failover circuit to reroute the data for the logical circuit.

2010-02-25

20100046367

POWER AND RESOURCE EFFICIENT APPDU BASED APPROACH WITH SCHEDULED DATA TRANSMISSION TIMES FOR WLAN - Disclosed are methods and apparatuses for communications by which a physical layer packet is generated for transmission to a node, or by which a physical layer packet is received from a node, the physical layer packet having a plurality of MAC packets, wherein the physical layer packet includes a transmission schedule associated with the plurality of MAC packets in the physical layer packet.

2010-02-25

20100046368

SYSTEM AND METHODS FOR DISTRIBUTED QUALITY OF SERVICE ENFORCEMENT - A grid router including devices forwarding session data over an unreliable network between the devices, and distributed means providing quality of service levels defined per session given network or device congestion, the devices including session-handling units and egress units forwaring session data to devices external to the network, the router transporting the data across a link with acknowledgement, identifying link congestion and modifying the transporting as a function of the congestion, the router also connecting a multicast session, token bucket shaper with token bucket shapers of external devices, joining session token bucket shapers used for unicast and multicast sessions to the multicast session, token bucket shaper and deducting tokens consumed by the multicast session from a token budget of the session token bucket shaper, the router attributing priorities to a single traffic session as the session moves through the router while keeping packet order within the session.

2010-02-25

20100046369

Network Quality of Service Update Control - A method for communicating in a network is provided. The method comprises identifying a QoS threshold, and determining a difference between a first quality of service (QoS) parameter and a second QoS parameter. The method also comprises comparing the QoS threshold to the difference between the first and second QoS parameters. The method further comprises determining whether to use the second QoS parameter based on the comparison.

2010-02-25

20100046370

SYSTEM AND METHOD FOR FAST, RELIABLE BYTE STREAM TRANSPORT - Reliable byte stream transfer protocols play an important role in modern networks. The present invention implements such a protocol using credits for flow control and negative acknowledgements for reliable delivery. The credit mechanism uses credit transfer in installments and is immune to the losses or corruptions of intermediate credit installments. Negative acknowledgements are used to solicit the retransmission of data stream component. The present invention provides full compatibility at the programming interface with reliable byte transfer protocols, such as TCP, and also allows full interoperability among hosts running the aforesaid standard protocol or the protocol of the present invention.

2010-02-25

20100046371

FEEDBACK-BASED ONLINE NETWORK CODING - A method, apparatus and computer program product for feedback-based online network coding is presented. In one embodiment, a transmitting node determines a linear combination of packets to transmit from a transmit queue. The transmitting node transmits the linear combination of packets. The transmitting node determines whether a packet can be removed from the transmit queue, wherein when a determination is made that a packet can be removed from the transmit queue then removing the packet from the transmit queue, and when a determination is made that a packet cannot be removed from the transmit queue then refraining from removing the packet from the transmit queue.

2010-02-25

20100046372

Wavefront Detection and Disambiguation of Acknowledgements - One or more flow control modules, implemented on various types of network topologies, provide a number of functionalities for controlling the flow of IP packets (such as TCP/IP packets) over a network connection. The flow control modules may be implemented within a sender and/or receiver or may be deployed into a network as a separate device without requiring significant additional resources.

2010-02-25

20100046373

TIMESTAMP METERING AND ROLLOVER PROTECTION IN A NETWORK DEVICE - A network device for processing data on a data network includes a plurality of ports, configured to receive data from a data network and to send processed data to the data network, a memory management unit configured store data on and retrieve data from the memory and a metering unit configured to police a flow of the processed data to be sent to the network device. The metering unit is configured to utilize a series of leaky bucket units, where tokens are added to each leaky bucket unit only when that particular leaky bucket unit is accessed. The metering unit is also configured to add the tokens based on a prior timestamp value, a current timing value and an established rate and a multiplication to establish the tokens is accomplished by shifting a register of the established rate.

2010-02-25

20100046374

Method and receiver for controlling the conformance of a data flow in a communication system to a traffic definition - A method is described for controlling the conformance of a data flow in a communication system to a traffic definition. The communication system comprises a transmitter and a receiver and data packets transporting the data flow are sent from the transmitter to the receiver. The receiver sends responses identifying received data packets to the transmitter, and the transmitter comprises a control function which controls the number of sent data packets for which no response is received according to a limit for the number of outstanding data packets. In the method, a conditioning criterion is obtained for the data flow, the conditioning criterion being associated with the traffic definition. The receiver determines a conformance parameter for the received data packets transporting the data flow. The limit and/or the sending of the responses is modified according to the conditioning criterion and the determined conformance parameter for controlling the number of transmitted data packets. A receiver and a software program embodying the invention are also described.

2010-02-25

20100046375

Congestion Control Using Application Slowdown - A computer-implemented method is provided, including monitoring one or more parameters of a computer system that executes one or more service requester processes that issue service requests to one or more service provider processes. A congestion in the system is detected by analyzing the parameters. Upon identifying at least one of the service requester processes as contributing to the congestion, execution of the at least one of the service requester processes is slowed. Other embodiments are also described.

2010-02-25

20100046376

System and Method for Balancing Network Load in a Non-Transparent Multi-Hop Relay Network - A method for balancing network load includes determining an initial capacity of a wireless network comprising a plurality of endpoints coupled to a plurality of different types of access stations. The access stations comprise one or more relay stations and at least one base station. The method also includes identifying one or more endpoints that would increase capacity of the wireless network if switched to a different access station. The method further comprises tentatively switching the identified endpoints from their current access station to a different access station. The method additionally includes determining if the capacity of the wireless network is increased from the initial capacity by the tentative switch and, upon the capacity of the wireless network increasing, switching the identified endpoints from their current access station to a different access station.

2010-02-25

20100046377

List-Based Alerting in Traffic Monitoring - A technique for identifying deviations in patterns of data traffic between host devices communicating over a network involves establishing a baseline traffic distribution by categorizing data traffic during a learning period. The baseline traffic distribution includes a list of categories and a metric value and a measure of variability of the metric value for each category in the list. An observed traffic distribution is generated by categorizing data traffic during an observation period. The observed traffic distribution includes a list of categories and a metric value associated with each category in the list. An alarm is generated in response to at least one of the metric values of the categories of the observed traffic distribution deviating significantly from the corresponding metric value in the baseline traffic distribution based on a pair-wise comparison of the observed metric values with respective thresholds established for corresponding categories of the baseline traffic distribution.

2010-02-25

20100046378

METHODS AND SYSTEMS FOR ANOMALY DETECTION USING INTERNET PROTOCOL (IP) TRAFFIC CONVERSATION DATA - A computer-based method for detecting anomalies in the traffic passing through an internet protocol (IP) network is described. The method includes extracting, from a database, a single instance of each unique packet header associated with a plurality of IP-to-IP packets, the IP-to-IP packets having been transmitted across the IP network over a predefined period of time, analyzing the packet headers to identify anomalous conversations based on at least one of a conversation uniqueness, a time of week uniqueness, and a data quantity uniqueness, and providing alerts corresponding to detected anomalous conversations.

2010-02-25

20100046379

OPERATING NETWORK ENTITIES IN A COMMUNICATIONS SYSTEM - Network entities in a communications system include one hierarchical level of a management network of the communications system, where fault and/or performance management related data is sent. A first network entity sends such data to at least one second network entity after the at least one second network entity is determined based on a configuration management relationship with the first network entity.

2010-02-25

20100046380

METHOD AND SYSTEM FOR REAL TIME SIMULTANEOUS MONITORING OF LOGICAL CIRCUITS IN A DATA NETWORK - Methods and systems are provided for real time simultaneous monitoring of logical circuits. In accordance with an example method, first status information is requested for a first logical connection at a host end of a logical circuit comprising the first logical connection. The logical circuit connects a host device to a remote device and traverses a first local access and transport area, an inter-exchange carrier, and a second local access and transport area. The first local access and transport area is at the host end of the logical circuit, and the second local access and transport area is at a remote end of the logical circuit. A logical identifier of the logical circuit is identified based on the first status information. A second logical connection at the remote end of the logical circuit is identified based on the logical identifier of the logical circuit. Second status information for the second logical connection is requested after identifying the second logical connection. An indication of whether the logical circuit has failed is displayed based on the first and second status information.

2010-02-25

20100046381

METHOD AND APPARATUS FOR PROCESSING OF AN ALARM RELATED TO A FRAME RELAY ENCAPSULATION FAILURE - A method and apparatus for providing automated processing of an alarm related to a frame relay encapsulation failure on a packet network, e.g., a Virtual Private Network (VPN), are disclosed. For example, the method receives an alarm or a ticket related to a network connection with a frame relay encapsulation, and correlates the ticket or said alarm with a circuit. The method determines a number of logical channels supported by the circuit between a customer edge (CE) router and a provider edge (PE) router. The method performs one or more tests from the PE router to one or more customer end device connected to the PE router through the CE router, and performs one or more tests from the PE router to one or more remote customer end devices, if all of the one or more tests from the PE router to the one or more customer end devices connected to the PE router through the CE router are successful.

2010-02-25

20100046382

METHOD AND APPARATUS FOR IMPROVED SINGLE CELL ADAPTION DUE TO CHANGE IN ENVIRONMENT - A communication method for use in a wireless communications network is proposed, said method comprising the steps of—monitoring at least one property representative of the channel variability in time and/or frequency, for each of at least two channels in the cell, used to communicate with said at least two user terminals;—using the result of the monitoring to control, by a control node in the network or in one of the user terminals, the communication in the cell. The control of the communication may include artificially inducing time selectivity and/or frequency selectivity or selecting an operating mode for the cell.

METHOD FOR TRANSMITTING RANDOM ACCESS CHANNEL MESSAGE AND RESPONSE MESSAGE, AND MOBILE COMMUNICATION TERMINAL - A method for responding to a random access channel message, a method for transmitting a random access channel message and a mobile communication terminal for supporting the same are disclosed. The method for responding to a random access channel message includes reading quality measurement information of a downlink channel from a second layer header of a random access channel (RACH) message which is transmitted from a user equipment to an uplink, controlling transmission power of a response message for the RACH message according to the quality measurement information; and transmitting the response message to the user equipment. Since transmission power can be adaptively controlled according to a channel measurement result of the user equipment, a radio resource can be efficiently used. In a method in which information indicating whether or not quality measurement information is included or whether or not upper layer information is included is notified to a base station through a header, compatibility between the existing user equipment and a radio network can be maintained.

APPARATUS AND METHOD FOR MEASURING BI-DIRECTIONAL RADIO CHANNEL HAVING MULTIPLE ANTENNA - An apparatus and method for measuring bi-directional radio channel with multiple antenna are provided. The apparatus includes a transmitter for amplifying a signal that is frequency-up converted to radio frequency and removing a signal of other frequency band, a high power multiplexing switch for sequentially transferring transmitting signals from the transmitter to a corresponding circulator, a plurality of circulators for transferring the transmitting signals from the high power multiplexing switch to a corresponding antenna among multiple antennas, and transferring a receiving signal from a corresponding antenna, a low loss multiplexing switch for receiving the receiving signal from the corresponding circulator, and sequentially transferring the receiving signal; and a receiver for receiving the receiving signal from the low loss multiplexing switch, removing undesired frequency components from the receiving signal except a desired frequency band and low-noise amplifying the desired frequency band of the receiving signal.

2010-02-25

20100046387

DEVICE AND METHOD FOR DETERMINING A TRANSMISSION BEHAVIOR OF SUB-CHANNELS - A device for a method for determining the transmission performance of sub-channels of a transmission channel in a radio-communication system is specified, where data-comprising signal carriers are generated for the setup of the transmission channel within the radio-communication system and accommodated in the sub-channels of the transmission channel, and the transmission performance of the sub-channels is determined on the basis of the signal sub-carriers superposed with interferers. In this context, each sub-channel occupies a separate bandwidth sub-range of a total bandwidth range of the transmission channel. The bandwidth sub-range is disposed within the bandwidth at a spacing distance from other bandwidth sub-ranges of the total bandwidth range, and the interferers are limited to the bandwidth sub-range allocated to the respective sub-channel.

2010-02-25

20100046388

METHOD AND SYSTEM FOR ESTIMATING DISTANCE BETWEEN NODES IN WIRELESS SENSOR NETWORKS - The present invention relates to a method for estimating a distance between nodes by using a round trip time (RTT) of a packet based on a CSMA/CA protocol in wireless sensor networks and a system thereof. The present invention provides a method for estimating a distance between nodes in wireless sensor networks that includes (a) measuring a transmission time of a transmission signal transmitted to the other node and a reception time of a reception signal received from the other node in response the transmission signal, and receiving a reception time of the transmission signal through the reception signal from the other node and a transmission time of the reception signal through a signal received after the reception signal from the other node; and (b) estimating a distance to the other node by using the transmission/reception time of all signals acquired in step (a). According to the present invention, it is possible to accurately estimate the distance between two nodes and as a result, it is possible to accurately identify positions of nodes that are deployed in a sensor field.

2010-02-25

20100046389

METHOD AND FACILITY FOR SELECTING SATELLITE CHANNELS - A method for selecting satellite channels in a transmission system consisting of a data source, a data sink, satellite modems and a satellite radio link with a general channel and at least one dedicated channel is provided. The data sink prompts the data source, as a function of the transmission characteristics of the general channel, to set up a dedicated channel for further data transmission.

2010-02-25

20100046390

RATE MATCHING DEVICE AND METHOD FOR CONTROLLING RATE MATCHING IN COMMUNICATIONS SYSTEM - A method for controlling rate matching in a communications system includes calculating a rate matching parameter containing a basic variable for an input bit string, and evaluating an additional parameter reflecting a current channel status of the transport channel receiving the input bit string. The input bit string generated in the upper layer is mapped to a physical channel of a Physical Layer by performing bit repeating or bit puncturing. If the bit repeating is executed on the input bit string on the basis of the first basic variable, and a second basic variable is calculated using the first basic variable and the additional parameter. A communication device to control rate matching between a physical channel and a transport channel includes a parameter calculator, an additional parameter generator, and a rate matching executioner to execute bit repeating or bit puncturing.

2010-02-25

20100046391

APPARATUS AND METHOD FOR NETWORK ANALYSIS - A system for, and method of, extracting information from multiple sessions and in accordance with disparate protocols, and transforming the same into a common language. Packets are collected by packet collectors distributed throughout a network and those packets, and/or metadata relating to those packets, are passed to an aggregator, which is made available via an application program interface to users/applications.

2010-02-25

20100046392

Controlling Software Distribution or File Transfer - An example of a solution provided here comprises automatically measuring bandwidth of a network connection; comparing results of the measuring, with bandwidth parameters; preventing a transfer of a file via the network connection, if measured bandwidth is less than a minimum acceptable value; providing to an end user an option of transferring a file via the network connection, if measured bandwidth is not less than a minimum acceptable value, but is less than an optimal value; and automatically transferring a file via the network connection, if measured bandwidth is greater than or equal to an optimal value.

2010-02-25

20100046393

METHODS AND SYSTEMS FOR INTERNET PROTOCOL (IP) TRAFFIC CONVERSATION DETECTION AND STORAGE - A computer-based method for collecting and storing types and quantities of traffic passing through an internet protocol (IP) network is described. The method includes extracting, from a database, a single instance of each unique packet header associated with a plurality of IP-to-IP packets, the IP-to-IP packets having been transmitted across the computer network over a predefined period of time, determining a highest probability service port for each IP-to-IP packet combination using the extracted packet headers, accumulating all IP-to-IP-on-Port packet combinations into a single record, the single record including a first packet time, a last packet time, and a total number of bytes transferred, storing the records for all IP-to-IP-on-Port conversations in the database, accumulating the packets based on IP-to-IP-on-protocol if the packets were part of a protocol where port numbers do not exist, and storing the accumulated packets where port numbers do not exist in the database.

2010-02-25

20100046394

COMMUNICATION APPARATUS, COMMUNICATION METHOD THEREFOR, AND PROGRAM - A communication apparatus searches for another network after a network is created, participates in another network in accordance with a role, in communication parameter setting processing, of a communication apparatus existing in another network, and executes the communication parameter setting processing. After the communication apparatus decides to receive the communication parameters from another communication apparatus, the communication apparatus determines an activation state of a providing function of a provider apparatus of the communication parameters, and requests the provider apparatus to provide the communication parameters in accordance with the determination.

2010-02-25

20100046395

INCREMENTAL AND TARGETED AUTO-DISCOVERY OF NETWORK DEVICES - A method and/or system is configured to improve the results of an auto-detection of network devices based on the causes of detection failures in preceding runs of the auto-detection process. As each device that is believed to be in the network is found to be undiscovered, the identification of the device and information regarding the cause(s) of non-discovery are stored. Prior to the next auto-detection run, one or more of the discovery parameters are modified, based on the causes associated with the undiscovered devices. The extent to which the discovery parameters are modified is preferably based on the apparent stability of the network, or upon the detection of changes to the network.

2010-02-25

20100046396

ADAPTIVE MANAGEMENT METHOD FOR WIRELESS TRANSFER NETWORK CONTAINING BASE STATION AND WIRELESS RELAY STATIONS - An adaptive management method for a wireless communication network comprising a base station and wireless relay stations is disclosed, and the method is applied in a wireless communication network group comprising a base station and wireless relay stations subordinated to the base station. The method comprises the following steps of: (a) a management node in the wireless communication network group constructing a wireless network topology information structure of the group; (b) the management node updating the wireless network topology information of the group when a network topology relationship of the wireless communication network group changes; (c) the management node utilizing the wireless network topology information of the group and a corresponding strategy to manage wireless relay stations and mobile terminals subordinated to the management node.

2010-02-25

20100046397

METHOD, SYSTEM AND COMPUTER PROGRAM PRODUCT FOR FACILITATING THE DESIGN AND ASSIGNMENT OF ETHERNET VLANS - A computer implemented method for facilitating creation of virtual local area networks (VLANs). The method includes: receiving a VLAN name, a class of service and two or more access ports; determining switches and trunks associated with the access ports; searching a VLAN database for the VLAN; and creating a VLAN if said searching does not result in locating the VLAN. The creating includes: selecting a starting access port from the two or more access ports; mapping a base path from the starting access port to another of the access ports, wherein the base path includes one or more of the switches and one or more of the trunks; and adding the base path to the VLAN including the starting access port and said another of the access ports.

2010-02-25

20100046398

METHOD AND SYSTEM FOR AUTOMATICALLY REALIZING CONNECTION BETWEEN MANAGEMENT DEVICE AND MANAGED DEVICE - A method for automatically realizing a connection between a management device and a managed device is provided, which includes the following steps. The managed device acquires connection configuration parameters. The managed device establishes the connection according to the connection configuration parameters with the management device. A system for automatically realizing a connection between a management device and a managed device is also provided.

2010-02-25

20100046399

RENDEZVOUSING RESOURCE REQUESTS WITH CORRESPONDING RESOURCES - The present invention extends to methods, systems, and computer program products for rendezvousing resource requests with corresponding resources. Doubly linked sorted lists are traversed using modulo arithmetic in both directions. Sorted lists can be partitioned based on a multiple proximity metrics. Node routing tables provide a logarithmic index to nodes within the ID space of the federation infrastructure to facilitate more efficient routing. Messages can be routed to nodes within a ring and proximally routed to nodes in other partitioned rings.

2010-02-25

20100046400

MULTICAST DISTRIBUTION TREE ESTABLISHMENT AND MAINTENANCE IN A WIRELESS MULTI-HOP RELAY COMMUNICATION SYSTEM - A method and apparatus for multicast communications in a multi-hop relay network are described including sending an extended request message, wherein the request message includes a multicast connection identification, multicast distribution tree information and a path identification and receiving an extended response message. Correspondingly, a method and apparatus for multicast communications in a multi-hop relay network are described including receiving an extended request message, wherein said request message includes a multicast connection identification, multicast distribution tree information and a path identification and sending an extended response message.

2010-02-25

20100046401

SIP-Based Session Control - These exemplary embodiments utilize Sessions Initiation Protocol (SIP) for admission control. The use of the SIP allows a SIP server itself to perform the admission control function. The use of RSVP linkages is reduced. The use of SIP for admission control allows an application to communicate, or “talk,” to a network and to request that resources within the network be reserved. Any communications device that uses sessions may utilize the SIP protocol for admission control. The SIP protocol may be used for unicast and multicast media sessions including video-on-demand and/or multicast video access control.

2010-02-25

20100046402

METHOD FOR OPERATING RADIO COMMUNICATION SYSTEM, INCLUDING SENDING STATION AND RECEIVING STATION THEREOF - In a radio communication system, at least a first frequency band is subdivided into C radio resource units which are allocable for radio transmissions between radio stations and terminals. Each radio resource unit has at least two adjacent subcarriers, for allocation of at least a first resource unit for a data transmission between a terminal and a radio station. The radio station receives from the terminal a first short training symbol which has spectrally the same bandwidth as the first frequency band and includes at least Q frequency carriers, where Q is greater or equal to C, but smaller than the total number of subcarriers. The radio station estimates the radio channel for at least the first radio resource unit using the first short training symbol, and an allocation of the first radio resource unit to the terminal is broadcasted by the radio station.

2010-02-25

20100046403

MOBILE COMMUNICATIONS SYSTEM, BASE STATION, USER APPARATUS, AND METHOD - A mobile communications system is disclosed. The mobile communications system includes: a first user apparatus for two-way communicating using frequency division duplex (FDD); a second user apparatus for two-way communicating using time division duplex (TDD); and a base station for communicating with the first and second user apparatuses. The base station distinguishes among the simultaneous transmitting and receiving schemes of the user apparatuses based on user-apparatus specific user identification information, flag information showing a simultaneous transmitting and receiving scheme that is included in an uplink control channel, or signatures, a proper use of which is made according to the simultaneous transmitting and receiving scheme.

2010-02-25

20100046404

ACQUISITION CIRCUIT FOR LOW CHIP RATE OPTION FOR MOBILE TELECOMMUNICATION SYSTEM - A User Equipment (UE) receives and samples communication signals, where the communication signals have a time frame format, a transmission chip rate and a synchronization code associated with a time slot that includes a midamble that indicates a modulation of the synchronization code where a specified modulation of received synchronization codes identifies the timing for a timeslot in which data is to be received. The UE preferably includes a synchronization code determination circuit, a midamble determination circuit, and a phase modulation sequence detection circuit operatively associated with the midamble determination circuit. The UE can be configured for use with the low chip rate option of the Third Generation Partnership Project (3GPP) Universal Mobile Telecommunication System (UMTS) standards that employ a predefined set of downlink SYNC codes that point to midambles which indicate SYNC code modulation sequence to enables reading of data in a subsequent Broadcast Channel (BCH) message.

2010-02-25

20100046405

METHOD AND ARRANGEMENT FOR ALIGNMENT OF PROTOCOL DATA UNITS IN A WIRELESS COMMUNICATION SYSTEM - The present invention relates to a method and arrangement for communicating a Protocol Data Unit (PDU) between a transmitter unit and a receiver unit in a wireless communication network. Said PDU comprising protocol headers associated with at least a first and a second protocol layers involved in the communication and a payload to be communicated. The method comprises the step of interacting between the at least first and second protocol layers, such that the sum of the bits of the protocol headers is n-bit aligned such as octet aligned independently of non-alignment of at least one of the protocol headers comprised in the PDU.

2010-02-25

20100046406

MOBILE COMPUTING DEVICE GEOGRAPHIC LOCATION DETERMINATION - A wireless connection between a mobile device and an IP-based wireless telecommunications network is established when the mobile device registers with a network controller (NC) through an access point (AP). When a geographical position is needed for the mobile device (e.g., a 911 call), messages are exchanged between the NC and a serving mobile location center (SMLC), where the SMLC retrieves information from a database that is used to identify the geographic position of the mobile device. The database can store a variety of information related to mobile devices such as: last known position, IP address, MAC address, a mobile or subscriber identifier (such as an International Mobile Subscriber Identity (IMSI)), last CGI, etc. The geographical position is communicated back to the NC, which can then forward the position information to a switch for processing such as for 911 calls.

2010-02-25

20100046407

METHOD, SYSTEM, AND DEVICE FOR ESTABLISHING ASSOCIATION-CONTROL RELATIONS - A method for establishing association-control relations includes these steps: An access adapting unit acquires subscription information of the user through a mobile application part (MAP) message, an SH interface message, or a Cx interface message; and acquires information indicating that the user is an ICS user from the subscription information of the user. A system, an access adapting unit, and an IMS CS control function (ICCF) for establishing association-control relations are also provided. In embodiments of the present invention, an access adapting unit such as a local-CS access adaptation function-network (L-CAAF-n) may know whether a user is an IMS centralized service (ICS) user and acquire the ICCF address information so that association-control relations may be established between the L-CAAF-n and the ICCF.

2010-02-25

20100046408

Apparatus and Method for Power-Saving in Multiple Antenna Communication System - A multiple-antenna transceiver in the present invention includes a frame controller and circuitry for transmitting and receiving. The transmitting component includes a sequence selection circuit, a MIMO modulation and coding circuit, and numerous TX RFE and AFE circuits. The receiving component includes a MIMO demodulation and decoding circuit, a sequence separation circuit, and numerous RX RFE and AFE circuits. The frame controller can enable and disable the TX and RX RFE and AFE circuits individually so as to reduce power consumption of the whole system.

2010-02-25

20100046409

Signalling Control for a Point-To-Multipoint Content Transmission Network - The invention relates to a technique for controlling a signalling for a point-to-multipoint (PTM) content transmission in a PTM-enabled network environment. A method embodiment of the invention comprises the steps of transmitting signalling information related to a PTM content transmission along a downstream signalling distribution tree (MSG) to a plurality of network access nodes; and receiving, in response to the signalling information, an aggregated feedback report from a feedback aggregation server separate from the downstream signalling distribution tree, wherein the aggregated feedback report is indicative of feedback reports from the plurality of network access nodes related to the signalling information.

2010-02-25

20100046410

MCBCS System Initialization and Establishment Over Wireless Broadband Network - Systems, apparatuses, and techniques for wireless communications can include receiving an access profile associated with a wireless device from a connectivity service network which is operable to determine whether the wireless device has privilege to a data feed provided by a multicast-broadcast service controller; operating a proxy, which is in communication with the multicast-broadcast service controller, based on the access profile to obtain service parameter information associated with the data feed and to use a first multicast-broadcast service data path between the proxy and the multicast-broadcast service controller to receive the data feed; and operating a base station to deliver the data feed to the wireless device in accordance with the service parameter information, the base station operable to use a second, different multicast-broadcast service data path between the proxy and the base station to receive the data feed.

2010-02-25

20100046411

METHOD AND APPARATUS FOR TRANSMITTING BROADCAST DATA, AND METHOD AND APPARATUS FOR RECEIVING BROADCAST DATA - A method and apparatus for receiving or transmitting broadcast data are provided. The broadcast data receiving method includes: acquiring first signaling information indicating an ensemble in which service composition information of a broadcasting service is transmitted, acquiring the service composition information based on the first signaling information, and providing the broadcasting service based on the service composition information and the first signaling information.

2010-02-25

20100046412

REFERENCE SIGNAL STRUCTURES FOR MORE THAN FOUR ANTENNAS - A transmitter, for use with a cellular communication network, includes a reference signal generation unit configured to provide a reference signal corresponding to a reference signal structure for more than four transmit antennas. The transmitter also includes a system information signal generation unit configured to provide a system information signal corresponding to the reference signal structure for the more than four transmit antennas. The transmitter additionally includes a transmit unit configured to transmit the reference signal and the system information signal.

2010-02-25

20100046413

COMMUNICATION METHOD USING RELAY STATION IN MOBILE COMMUNICATION SYSTEM - A communication method using a relay station (RS) in a mobile communication system is disclosed. A base station transmits identification information, which designates a position of a relay station region during at least one next frame, to a mobile subscriber station through the relay station, and the mobile subscriber station identifies the position of the relay station region during the at least one next frame. Thus, the mobile subscriber station does not need to synchronize with a relay station preamble to retrieve the relay station region for every frame, and a start point of the relay station region can be retrieved quickly and exactly even in the case that the position of the relay station region is varied.

2010-02-25

20100046414

SYSTEMS AND METHODS FOR LEVERAGING SPATIAL REUSE IN OFDMA RELAY NETWORKS - Systems and methods for scheduling transmission that leverages both diversity and spatial reuse gains in the presence of finite user buffers in a two-hop wireless relay setting are disclosed. The system includes partitioning a set of relays to enable spatial reuse while accounting for half-duplex nature of relays, and assigning and reusing of channels to the relays (and associated users) in the two partitions to maximize the aggregate system throughput while ensuring proportional fairness.

2010-02-25

20100046415

METHOD AND SYSTEM FOR EFFECTIVE ADAPTIVE CODING AND MODULATION IN SATELLITE COMMUNICATION SYSTEM - A Second Generation Digital Video Broadcasting via Satellite (DVB-S2) system is provided. More particularly, a method and apparatus for maintaining synchronization of a signal by changing an Adaptive Coding and Modulation (ACM) method that is used for a conventional DVB-S2 system are provided. In the apparatus and method, an FEC frame of a variable length is formed by turbo encoding rather than Bose-Chaudhuri-Hocquenghem (BCH) and Low Density Parity Check (LDPC) encoding, and a Physical Layer (PL) frame of a specific length is formed regardless of a modulation method, so that a satellite terminal receives a signal transmitted at a specific length regardless of a modulation method or a coding rate to easily maintain synchronization without interruption and efficiently transmit the signal.